/*
Copyleft (C) 2005 Hélio Perroni Filho
xperroni@yahoo.com
ICQ: 2490863

This file is part of ChatterBean.

ChatterBean is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

ChatterBean is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with ChatterBean (look at the Documents/ directory); if not, either write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA, or visit (http://www.gnu.org/licenses/gpl.txt).
*/

package bitoflife.chatterbean.aiml;

import org.xml.sax.Attributes;

import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;

public class Aiml implements AIMLElement {
  /*
  Attributes
  */

    private final Topic defaultTopic = new Topic("*");
    private final List<Topic> topics = new LinkedList<Topic>(Arrays.asList(new Topic[]{defaultTopic}));

    private final List<Category> categories = new LinkedList<Category>();

    private String version;

  /*
  Constructors
  */

    public Aiml(Attributes attributes) {
        version = attributes.getValue(0);
    }

    public Aiml(Category... categories) {
        this.categories.addAll(Arrays.asList(categories));
    }
  
  /*
  Method Section
  */

    public void appendChild(AIMLElement child) {
        if (child instanceof Category) {
            Category category = (Category) child;
            category.setTopic(defaultTopic);
            defaultTopic.appendChild(category);
            categories.add(category);
        } else {
            Topic topic = (Topic) child;
            topics.add(topic);
            categories.addAll(topic.categories());
        }
    }

    public void appendChildren(List<AIMLElement> children) {
        for (AIMLElement child : children)
            appendChild(child);
    }

    public List<Category> children() {
        return categories;
    }

    public boolean equals(Object obj) {
        if (obj == null || !(obj instanceof Aiml))
            return false;
        else
            return categories.equals(((Aiml) obj).categories);
    }

    public String toString() {
        StringBuilder result = new StringBuilder();
        for (Category i : categories) {
            result.append(i);
            result.append('\n');
        }

        return result.toString();
    }
  
  /*
  Properties
  */

    public String getVersion() {
        return version;
    }
}
